Convert query params from list to dict (#744)
Convert query params from list to dict (#744)

Patroni is relying on params to determinte timeout and amount of retries when executing api requests to consul. Starting from v1.1.0 python-consul changed internal API and started
using `list` instead of `dict` to pass query parameters. Such change broke "watch" functionality.

Fixes https://github.com/zalando/patroni/issues/742 and
https://github.com/zalando/patroni/issues/734
zalando/patroni,zalando/patroni